Once you are a Member of the Senate Fraternity, you can do no wrong, according to the rest of the Frat Boys, even after you leave the Senate. They still like their most despised member / ex-member a lot more than they like anyone from outside their club.
And besides.... If Miss Lindsey recognized that Biden is corrupt, he would have to recognize his own corruption.
He and several of the other members of his party in the Senate would probably vote for conviction but they are skittish of angering 92 percent of their party, while pleasing ust National Review and Jennifer Rubin.